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Nortek FG7MQ - Furnace Component Checks and Troubleshooting; Heat Exchanger, Venting System Checks; Troubleshooting Guide; Furnace Control Board Fault Conditions

Nortek FG7MQ
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28
 The furnace should operate for
many years without soot buildup in the flue passageways,
however, the flue, vent system, and burners should be

technician annually to ensure continued safe operation.
Pay attention to any deterioration from corrosion or other
sources.
WARNING:
      







       
and outlet pipe to ensure they are not blocked by debris.
Any damaged section of vent pipe must be replaced,
and any obstruction or blockage must be removed prior
to operating the furnace.
TROUBLESHOOTING










steel wool. 

verify that there is no double trapping of condensate.
 


       

Table 5Table 6
32)) to determine
fault condition.
IMPORTANT NOTE:





37)
and reset if necessary.


and repair the problem.
     
) and reset if necessary.


and repair the problem.
Table 5
DIAGNOSTIC DESCRIPTION
GREEN
LED
RED
LED
 Off Off
  
1 Hour Lockout 
 Heart Beat On
 On 
  On
  Off
 Off 
Furnace Control Board Fault Conditions
Table 6
DIAGNOSTIC DESCRIPTION
GREEN
LED
RED
LED
 Off Off
 Heart Beat On
 On 
  
Motor Control Board Fault
Conditions - Variable Speed

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